Alright, let's solve this math problem step by step. First, we have the number 287. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 150. So, we're going to take the number 287 and add it to itself 150 times.
Step 1: 0 + 287 = 287
Step 2: 287 + 287 = 574
Step 3: 574 + 287 = 861
Step 4: 861 + 287 = 1148
Step 5: 1148 + 287 = 1435
Step 6: 1435 + 287 = 1722
Step 7: 1722 + 287 = 2009
Step 8: 2009 + 287 = 2296
Step 9: 2296 + 287 = 2583
Step 10: 2583 + 287 = 2870
Step 11: 2870 + 287 = 3157
Step 12: 3157 + 287 = 3444
Step 13: 3444 + 287 = 3731
Step 14: 3731 + 287 = 4018
Step 15: 4018 + 287 = 4305
Step 16: 4305 + 287 = 4592
Step 17: 4592 + 287 = 4879
Step 18: 4879 + 287 = 5166
Step 19: 5166 + 287 = 5453
Step 20: 5453 + 287 = 5740
Step 21: 5740 + 287 = 6027
Step 22: 6027 + 287 = 6314
Step 23: 6314 + 287 = 6601
Step 24: 6601 + 287 = 6888
Step 25: 6888 + 287 = 7175
Step 26: 7175 + 287 = 7462
Step 27: 7462 + 287 = 7749
Step 28: 7749 + 287 = 8036
Step 29: 8036 + 287 = 8323
Step 30: 8323 + 287 = 8610
Step 31: 8610 + 287 = 8897
Step 32: 8897 + 287 = 9184
Step 33: 9184 + 287 = 9471
Step 34: 9471 + 287 = 9758
Step 35: 9758 + 287 = 10045
Step 36: 10045 + 287 = 10332
Step 37: 10332 + 287 = 10619
Step 38: 10619 + 287 = 10906
Step 39: 10906 + 287 = 11193
Step 40: 11193 + 287 = 11480
Step 41: 11480 + 287 = 11767
Step 42: 11767 + 287 = 12054
Step 43: 12054 + 287 = 12341
Step 44: 12341 + 287 = 12628
Step 45: 12628 + 287 = 12915
Step 46: 12915 + 287 = 13202
Step 47: 13202 + 287 = 13489
Step 48: 13489 + 287 = 13776
Step 49: 13776 + 287 = 14063
Step 50: 14063 + 287 = 14350
Step 51: 14350 + 287 = 14637
Step 52: 14637 + 287 = 14924
Step 53: 14924 + 287 = 15211
Step 54: 15211 + 287 = 15498
Step 55: 15498 + 287 = 15785
Step 56: 15785 + 287 = 16072
Step 57: 16072 + 287 = 16359
Step 58: 16359 + 287 = 16646
Step 59: 16646 + 287 = 16933
Step 60: 16933 + 287 = 17220
Step 61: 17220 + 287 = 17507
Step 62: 17507 + 287 = 17794
Step 63: 17794 + 287 = 18081
Step 64: 18081 + 287 = 18368
Step 65: 18368 + 287 = 18655
Step 66: 18655 + 287 = 18942
Step 67: 18942 + 287 = 19229
Step 68: 19229 + 287 = 19516
Step 69: 19516 + 287 = 19803
Step 70: 19803 + 287 = 20090
Step 71: 20090 + 287 = 20377
Step 72: 20377 + 287 = 20664
Step 73: 20664 + 287 = 20951
Step 74: 20951 + 287 = 21238
Step 75: 21238 + 287 = 21525
Step 76: 21525 + 287 = 21812
Step 77: 21812 + 287 = 22099
Step 78: 22099 + 287 = 22386
Step 79: 22386 + 287 = 22673
Step 80: 22673 + 287 = 22960
Step 81: 22960 + 287 = 23247
Step 82: 23247 + 287 = 23534
Step 83: 23534 + 287 = 23821
Step 84: 23821 + 287 = 24108
Step 85: 24108 + 287 = 24395
Step 86: 24395 + 287 = 24682
Step 87: 24682 + 287 = 24969
Step 88: 24969 + 287 = 25256
Step 89: 25256 + 287 = 25543
Step 90: 25543 + 287 = 25830
Step 91: 25830 + 287 = 26117
Step 92: 26117 + 287 = 26404
Step 93: 26404 + 287 = 26691
Step 94: 26691 + 287 = 26978
Step 95: 26978 + 287 = 27265
Step 96: 27265 + 287 = 27552
Step 97: 27552 + 287 = 27839
Step 98: 27839 + 287 = 28126
Step 99: 28126 + 287 = 28413
Step 100: 28413 + 287 = 28700
Step 101: 28700 + 287 = 28987
Step 102: 28987 + 287 = 29274
Step 103: 29274 + 287 = 29561
Step 104: 29561 + 287 = 29848
Step 105: 29848 + 287 = 30135
Step 106: 30135 + 287 = 30422
Step 107: 30422 + 287 = 30709
Step 108: 30709 + 287 = 30996
Step 109: 30996 + 287 = 31283
Step 110: 31283 + 287 = 31570
Step 111: 31570 + 287 = 31857
Step 112: 31857 + 287 = 32144
Step 113: 32144 + 287 = 32431
Step 114: 32431 + 287 = 32718
Step 115: 32718 + 287 = 33005
Step 116: 33005 + 287 = 33292
Step 117: 33292 + 287 = 33579
Step 118: 33579 + 287 = 33866
Step 119: 33866 + 287 = 34153
Step 120: 34153 + 287 = 34440
Step 121: 34440 + 287 = 34727
Step 122: 34727 + 287 = 35014
Step 123: 35014 + 287 = 35301
Step 124: 35301 + 287 = 35588
Step 125: 35588 + 287 = 35875
Step 126: 35875 + 287 = 36162
Step 127: 36162 + 287 = 36449
Step 128: 36449 + 287 = 36736
Step 129: 36736 + 287 = 37023
Step 130: 37023 + 287 = 37310
Step 131: 37310 + 287 = 37597
Step 132: 37597 + 287 = 37884
Step 133: 37884 + 287 = 38171
Step 134: 38171 + 287 = 38458
Step 135: 38458 + 287 = 38745
Step 136: 38745 + 287 = 39032
Step 137: 39032 + 287 = 39319
Step 138: 39319 + 287 = 39606
Step 139: 39606 + 287 = 39893
Step 140: 39893 + 287 = 40180
Step 141: 40180 + 287 = 40467
Step 142: 40467 + 287 = 40754
Step 143: 40754 + 287 = 41041
Step 144: 41041 + 287 = 41328
Step 145: 41328 + 287 = 41615
Step 146: 41615 + 287 = 41902
Step 147: 41902 + 287 = 42189
Step 148: 42189 + 287 = 42476
Step 149: 42476 + 287 = 42763
Step 150: 42763 + 287 = 43050

So, 287*150 = 43050